Process for producing polyamides via anionic polymerization

US9139752B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Philippe Desbois · Maikammer, DE
• Bernd Bruchmann · Ludwigshafen, DE
• Dietrich Scherzer · Neustadt, DE
• Andreas Wollny · Glückstadt, DE
• Andreas Radtke · Mannheim, DE

Key dates

• Filing date: Sep 28, 2012
• Grant date: Sep 22, 2015
• Expiry date: Feb 6, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2475/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for producing polyamides, preferably crosslinked polyamides, via anionic polymerization of lactams in the presence of an anionic catalyst and of a caprolactam-capped polyisocyanate, where said isocyanate comprises more than 3.5 capped isocyanate groups.